Tag Archives: predation

Apodichtys flavidus: The Race Rocks Taxonomy

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These images were taken on the remote camera 5 shows a Pigeon Guillemot prior to feeding a Penpoint gunnel to chicks.During the months of May and June, the Pigeon Guillemots (Cepphus columba) are constantly diving off the north side of Great Race Rock and bringing up penpoint gunnels for their young. They nest under loose rock on several locations arounf the island. They are very cautious about going to their nest burrow where they may be seen by predators,

PUGET SOUND/ Strait of Juan de Fuca SPECIES

Apodichthys flavidus Penpoint Gunnel

Pholis clemensi Longfin Gunnel

Pholis laeta Crescent Gunnel

Pholis ornata Saddleback Gunnel

Pholis schultzi Red Gunnel

Xererpes fucorum Rockweed Gunnel

PENPOINT GUNNEL

This is a family of littoral fishes of the northern Pacific and northern Atlantic.They are typically found hiding under rocks and logs or in tidepools at low tide.The longest gunnel , at maximum of 46 cm,is the Penpoint Gunnel.Most gunnels feed on small crustaceans and molluscs.There are about 14 species, six are found here. Although secretive , this family is common in Puget Sound. This fish is not important commercially and is not considered threatened.This species can breath air when out of water.

PHYSICAL DESCRIPTION: Body elongate and compressed (eel-like body with no pelvic fins). Contains only flexible spines ,may have a dark streak that runs through the eye from top of head downward . Eye round, its diameter about one fifth the into length length of head. It may have small dark spots along the sides.Distance from snout to anal origin greater than half of body length.Maximum length is 1.5 feet.10 large melanophores along dorsal surface of gut and anus, melanophores can be also along postanal and dorsal near caudal region,ventral surface of gut has a row of small melanophores.Colour very variable depending upon diet as well as environment, from green through brown to red, the green colour from pigments dispersed through skin, the red in special pigment cells, the brown in combination (Hart 1973).Teeth are sharp,pointed, apparent in post-larvae.

Dorsal fin KC-XCIV (Miller and Lea 1972).

Anal fin I,36-42 (Miller and Lea 1972); I,38-42 (Hart 1973).

Pectoral fin 15-16 (Hart 1973).

Mouth Terminal,small,with thick lips (Hart 1973).

Verebrae 96-101 (Miller and Lea 1972)

DISTRIBUTION: Southern California to southeast Alaska and Kodiak Island.In British Columbia on both coasts of Vancouver Island, the Strait of Georgia .Common in Burrard Inlet in September.Queen Charlotte Islands (Hart 1973). In costal or bay water blending with vegetation such as Sargassum spp.,Ulva spp., and Zostera spp.,settling on the bottom at ca. mm TL (Wilkie 1966).Pelagic,along coastal waters and bays. Horseshoe Cove and vicinity of Portero Power Plant on San Francisco Bay,Marconi Cove of Tomales Bay.

REPRODUCTION: Spawing occurs from January to March.The egg mass is coiled around by one or both parents.The incubation period is about two and two a half months.Newly hatched larvae average about 13mm, and the body is transparent and positively phototactic (Wilkie 1966).The age of maturity of the penpoint gunnel has not be documented in the literature.Growth appears to be rapid during the first year from 20 to 40 milimeters in April and May to 100 to 120 millimeters by the end of summer.

REFERENCES: J.L.Hart- Pacific Fishes of Canada(1973),Wilkie (1966)

 

 

taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

March 8 2003- Miroslav Lestanin

 

Eagles and Police Boat

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‘Morning’, ‘Clear’, ‘15.0’, ”, ‘4.0’, ‘NE’, ‘Rippled’, ‘Carol + Mike’, ’07:07:58′),

2 black inflatables sped through the reserve at about 15:40. They were going too fast and bouncing in the 3 ft. seas to get the registration numbers but had ”police”in white letters along the sides. People on board had yellow jackets with ”police” on the backs. Called Stefan Beckmann-he will inquiries. ‘, ‘Mike’, ’14:38:11′

(5 immature) Bald Eagles in the reserve first thing this morning but by noon only 3 (1 Mature) remained.Just after 15:00 the adult Eagle flew over-head with what looked like part of a small fish-herring maybe- and was very aggressively pursued by one of the juveniles. The 2 big birds literally did summersaults in the air, one trying to get the fish and the other desperately trying to keep it! This air dance went on for almost ten minutes in a 30 knt. wind. Unfortunately did not see the outcome as the one with the fish finally dropped quite low over the water and flew over towards Rocky Pt.The juvenile followed close behind and they were soon too far away to see even with the telescope.A group of about 150 Pigeon Guillemots arrived this morning.They spread out over the island near their nesting areas,spent about 2 hours and then in a flurry were gone again.’, ‘Mike’, ’14:24:26′),

Sealions that seemed to be ‘fishing’ together,

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Good Evening
TEMPERATURE: Max. 9.5 ºC »» Min. 3.9 ºC »» Reset 6.8 ºC
MARINE LIFE: Watched a group of 5 or 6 Northern Sealions that seemed to be ‘fishing’ together, since most of the action took place under the water it is only conjecture but 4 good sized fish were brought to the surface within seconds. Other marine animals are known to work together to corral fish so it is not too surprising that sealions might as well. There are still fish balls but are small and short lived with fewer birds.
HUMAN INTERACTION: There were 14 Ecotour boats,1 research boat( the Drifter) 3 sail boats, 1 Dive Charter and 2 pleasurecraft in the MPA today.
posted by Carol or Mike S at 6:03 PM
Good Morning
WEATHER: Sky Part Cloudy »» Vis. 15 Miles »» Wind North East 7 Knots »» Sea Rippled
posted by Carol or Mike S at 6:47 AM

Blue Heron spent several hours fishing

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Good Evening
TEMPERATURE: Max. 8.9 ºC »» Min. 5.0 ºC »» Reset 7.7 ºC
MARINE LIFE: Still seeing numerous fish balls mostly in the tidelines outside the MPA boundries but the number of sea birds is down considerably from last week. There were 5 Harlequins in the little bay on the east side of Gr. Race also one Blue Heron spent several hours fishing in the eastern kelp bed then just before sunset flew off toward Bentinck Island. There are 5 California Sealions hauled out along the north shore of Gr. Race that have fresh looking wounds, mostly in the hind flipper area, my guess, evidence of encounters with the transient Orcas that have been in the area quite often lately. There are still about 600 Cormorants in the area, another indication that the food supply is still good.
HUMAN INTERACTION: Second Nature in with Angus, Scott over to work on the the cameras and computers. Station boat out to return Scott to campus and to Pedder Bay. There were 5 Ecotour boats, 1 pleasurecraft through today.posted by Carol or Mike S at 6:05 PM

Good Morning
WEATHER: Sky Part Cloudy »» Vis. 15 Miles »» Wind North East 21 Knots »» Sea 3 Foot Moderate
posted by Carol or Mike S at 7:25 AM

Counted over 500 Cormorants just on North Rocks

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Good Evening
TEMPERATURE: Max. 10.2 ºC »» Min. 7.0 ºC »» Reset 8.1 ºC
MARINE LIFE: Another good day for sea birds feeding, thousands of birds from Whirl Bay and as far as you can see to the east , every rock including Gr. Race ‘covered’ in birds. Counted over 500 Cormorants just on North Rocks and the rocks to the Southeast and most likely at least that many in the kelp beds. Not many Sea Lions have hauled out, only 15 along the north shoreline of Gr. Race, a group of 11 Northern are bunched together on the high point just east of the house but are very edgy.Most of the animals hauled out are on the middle rock.The injured California Sea Lion was gone at first light and we have not seen him all day. There were 7 geese today.There is no standing fresh water but they do enjoy the greens. A small group – 5 or 6 – Transient Orca were hunting in the entrance to Pedder Bay and took at least one seal. There were several pleasurecraft and 7 Ecotour boats watching the kill. After the boats left the Orca moved west along the shoreline quite slowly and at times rested on the surface for 5 minutes at a time. It took them a good hour to go from the east tip of Bentinck Island to Whirl Bay, I guess they continued west but did not see them again.
HUMAN INTERACTION: There was 1 dive charter in the West Race area, 13 Ecotour boats and 7 pleasurecraft through today.
posted by Carol or Mike S at 5:59 PM

Sealions still scared off by DND blasting

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Good Evening
TEMPERATURE: Max. 8.0 ºC »» Min. 4.9 ºC »» Reset 7.1 ºC
MARINE LIFE: Still large numbers of sea birds but the fish balls are fewer and less frequent. Did see a Harbour seal catch a fairly large salmon along the dock on the west side. The activity attracted a hundred or more gulls,some we lucky and flew off with nice pink chunks of fish. The seal made short work of the salmon then hauled out on one of the flat rocks to rest and digest it’s meal.The number of Sea lions hauled out is down dramatically although the conditions are very good, lots of food and calm weather. The one major problem is the effect of the blasting.These animals were getting used to the boat and people traffic but are now very stressed and spook very easily. So much for referring to this MPA as a wildlife refuge where the animals can expect to hunt, feed, communicate, socialize, rest etc. without disturbanceand interference.
HUMAN INTERACTION: There were 6 Ecotour boats and 4 pleasurecraft. The station boat made a trip to Pedder Bay and back
posted by Carol or Mike S at 6:34 PM

Fish balls and thousands of birds feeding

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Good Evening TEMPERATURE: Max. 13.9 ºC »» Min. 8.3 ºC »» Reset 11.1 ºC

MARINE LIFE: Still thousands of sea birds feeding at times in the ‘fish balls’ that are smaller and less frequent than the pass few days. Do not remember an October with this many gulls or cormorants in the reserve, usually we have more wind and rain but the very light winds and good supply of food fish have really provided optimum conditions for the birds.

HUMAN INTERACTION: There were 11 Ecotour boats, 5 pleasurecraft in the reserve. The station boat to Pedder Bay and back,also Garry and students out in Second Nature for late afternoon class. posted by Carol or Mike S at 6:19 PM

Congregation of gulls

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Good Evening
TEMPERATURE: Max. 13.7 ºC »» Min. 8.9 ºC »» Reset 10.2 ºC »» Rain 0.4 mm
MARINE LIFE: Today there are hundreds of gulls on Gr. Race and hundreds more on all the other rocks and perched on the kelp. Did see a few fish balls but mostly the gulls are just sitting on shore. The majority are juveniles. The 6 geese are here again -think they must have spent the night.
HUMAN INTERACTION: Garry was over this morning in Hyaku to work on the computer for camera #2 which has been ‘acting up’ the last few days. There were 5 Ecotour boats and 3 pleasurecraft in the reserve today.
posted by Carol or Mike S at 6:01 PM

Orca sighted

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Good Evening
TEMPERATURE: Max. 14.1 ºC »» Min. 8.5 ºC »» Reset 11.8 ºC
MARINE LIFE: There are thousands of sea birds busy feeding in the many fish balls, a few inside the MPA but most of the action in about 1/2 to 1 mile past the boundaries. Many of the birds come into the reserve to rest ashore and in the kelp so there is a constant flow of birds back and forth. A small group of Orca were sighted southeast of Gr. Race travelling westsouthwest.1 Canada goose came ashore up over the rocks by the winch house causing a stampeed of sea lions. The gulls and other birds move among the sea lions all the time but for some reason, the goose rising up out of the water waving it’s neck and moving towards them was somewhat of a threat.The goose seems to have an injured left wing and moved into a protected area among some large boulders and except to pop it’s heard up every once in a while for a look around has stayed put all day. Cannot get close to the goose to assess it’s condition as any movement would disturb the 60 or so sea lions hauled out all along the shore.
HUMAN INTERACTION: There were 11 Eco tour boats and 7 pleasure craft through the reserve today.
posted by Carol or Mike S at 6:25 PM
Good Morning
WEATHER: Sky Clear »» Vis. 15 Miles »» Wind East 11 Knots »» Sea Rippled
posted by Carol or Mike S at 7:07 AM

Rosedale Light misplaced!

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Good Evening
TEMPERATURE: Max. 13.7 ºC »» Min. 7.1 ºC »» Reset 10.3 ºC
MARINE LIFE: A perfect day for the thousands of sea birds feeding in the many fish balls, most of the action was some distance outside the reserve but many of the cormorants and gulls landed to rest in the kelp and along the shore. Birds coming and going all day, the fishing seemed good for the sea lions as well, saw several 8-10 lb salmon caught just off the end of the dock.
HUMAN INTERACTION: There were 22 Ecotour boats and 7 pleasurecraft in the reserve today. One pleasure craft – open aluminum Girgor, approx. 4metres long 14K 33165 4 persons onboard were fishing in the reserve between Gr. Race and North Rocks.Reported this infraction to Fisheries. Near noon noticed a tug towing a log barge very close to the Rosedale light buoy, shortly after could not see the buoy and recieved several calls on the marine radio from sports fishers that they also noticed the buoy missing. Sometime later ‘found’ the buoy about 1 mile southwest of it’s designated position. Called Coast Guard and hopefully they will soon reposition the buoy.
posted by Carol or Mike S at 6:37 PM
Good Morning
WEATHER: Sky Clear »» Vis. 15 Miles »» Wind East 7 Knots »» Sea Rippled
posted by Carol or Mike S at 7:22 AM