[Annelida] Sergio's posting on July 6

[Jian-Wen Qiu]

Dear all,

This is a late response to Sergio Salazar's posting on July 6.  The original posting is at the end of this message.

If someone there finds Wu (1964) useful, please let me know.  I can convert the paper into a pdf file and translate it into English.

Regards,

Jian-Wen Qiu
Department of Biology
Hong Kong Baptist University
224 Waterloo Road, Kowloon
Hong Kong
Phone: 852-34117055
Fax: 852-34115995
----- Original Message ----- 
From: "Sergio Salazar" <savs551216 at hotmail.com>
To: <g.read at niwa.co.nz>; <g.read at niwa.co.nz>
Sent: Thursday, July 06, 2006 3:54 AM
Subject: [Annelida] Capitella, finale


> Dear Geoff,
> 
> Hi! It seems that this last message did not reach Annelida discussion group. 
> Please take a look at it and tell me if you find it relevant and if so, 
> please forward it to the list.
> 
> Best wishes,
> 
> Sergio
> . . . .
> 
> Dear folks,
> 
> This is my last message on Capitella, I promise!
> 
> In their contribution to the Copenhagen Polychaete Conference, Wu, Qian & 
> Zhang (1991 Ophelia Suppl. 5:391-400) reported their studies on the 
> morphology, reproduction, ecology and allozymes of three Capitella from 
> Qingdao. From their table 2 (p. 393), four features seem promising: 
> prostomial surface (smooth vs papillate), number of genital spines in 
> chaetiger 8, number of hooded hooks per abdominal rami, and number of 
> accessory teeth in hooded hooks.
> 
> In their discussion (p. 399) they stated: "Wu (1964) compared 9 subspecies 
> of Capitella capitata collected from different parts of the world and 
> suggested that differentiation of these subspecies was not just due to the 
> geographic isolation but might be the result of a complicated evolutionary 
> process."  The key paper to understand this perspective is:
> 
> Wu BL 1964 Subspecific differentiation and ecological characteristics of 
> Capitella capitata (Fabricius, 1780) (Polychaeta, Capitellidae). Oceanologia 
> et Limnologia Sinica 6:266-271.
> 
> It would be very helpful if someone could make a pdf of the original, which 
> is fast, and an English translation of the text, which may not be that fast, 
> so his conclusions can be understood by any non-Chinese speaking person. I 
> think Baoling Wu was following Olga Hartman, but I may be wrong.
> 
> Olga Hartman (1947 Allan Hancock Pac. Exped. 10:391-481) made a diagram to 
> capitellid genera (that Amaral, Gillet, and Piltz i.a. have followed), and 
> included a key to Western species of Capitella with C. capitata, C. dizonata 
> Johnson, 1901 (Washington), and described C. ovincola (California) from a 
> squid egg mass.
> 
> For the catalogue (Hartman, 1959:439-440) besides C. capitata, she included:
> C.c. antarctica Monro, 1930
> C.c. belgica Czerniavsky, 1881 (=C. c.),
> C.c. danica Czerniavsky, 1881 (= C. c.),
> C.c. floridana Hartman, 1959,
> C.c. hebridarum Czerniavsky, 1881 (= C.c.),
> C.c. neapolitana Czerniavsky, 1881 (= C. c.),
> C.c. suchumica Czerniavsky, 1881 (Black Sea) (= C.c.)
> C.c. ovincola Hartman, 1947.
> 
> For the supplement (Hartman, 1965:64) she added:
> 
> C.c. europaea Wu, 1964 (Mediterranean Sea, perhaps = C.c. neapolitana, 
> mihi).
> C.c. japonica Kitamori, 1960,
> C.c. oculata Hartman, 1961 (California), and
> C.c. tripartita Hartman, 1961 (California).
> 
> Linda Warren (1976:197; sorry no pdf because my photocopy is in very poor 
> quality) included a comparative diagram to the two subspecies (C.c. capitata 
> and C. c. floridana), and seven others were regarded as full valid species:
> 
> C. aberranta Hartman & Fauchald, 1971
> C. giardi (Mesnil, 1897) France
> C. hermaphrodita Boletzky & Dohle, 1967 (Mediterranean, Loligo egg mass)
> C. jonesi (Hartman, 1959) Florida.
> C. ovincola Hartman, 1947,
> C. perarmata (Gravier 1911) (not stated but it might include C.c. 
> antarctica), and
> C. tripartita Hartman, 1961.
> 
> Linda did not recognize most subspecies because they were regarded as 
> juveniles, or as morphological variants that might fall within the stem 
> species. Further, she regarded several species as having a wide or very wide 
> distribution.
> 
> This perspective was significantly modified when together with David George 
> (1986 Bull. Brit. Mus. Nat. Hist. Zool. 50:117-125), they described C. 
> caribaeorum from the Grand Caribbean region (Florida to Saint-Lucia). For 
> the discussion, they relied on several morphological differences such as the 
> presence of genital spines, the thorax chaetal formula, the number of hooded 
> hooks per ramus, and the relative egg size. Further, they also included some 
> ecological details about the type of substrate where the similar species 
> were recorded from.
> 
> Thus, taking the latter approach, together with the ideas that Wu et al and 
> Blake proposed, there is an exciting ground to study the morphological 
> variation in the same region, and between different populations or species. 
> Good luck everyone! Have fun,
> 
> Sergio
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